baber/WOPTO huggingface dataset:
Patent GB-183582-A (GB)
Title: Improvements in or relating to metallic moulds for forming glass articles
IPC: C03B9/48
Filed: 1921-04-26
Abstract: 183,582. Frink, R. L. April 26, 1921. Alloys for making glass working apparatus consists of aluminium or copper and calcium, barium or magnesium. A suitable alloy contains 2 per cent of calcium &c. In making such an alloy, it is recommended that an alloy containing 75 per cent of aluminium and 25 per cent of calcium &c. be first prepared at a temperature of 500‹ C to 1100‹ C and that this be added in the required proportion to pure molten aluminium.
Patent GB-887793-A (GB)
Title: Improvements in or relating to jack mechanism for heavy loads
Inventor: BOND HARRY LAURENCE FRED
IPC: B65G7/04
Filed: 1958-02-06
Abstract: 887,793. Transferring loads to and from vehicles by jacks. DAVY & UNITED ENGINEERING CO. Ltd. Feb. 5, 1959 [Feb. 6, 1958], No. 12255/61. Divided out of 887,792. Drawings to Specification. Class 78 (4). [Also in Group XXXII] The subject-matter of this Specification is substantially the same as that described in Specification 887,792, but the claims are concerned with the jacking mechanisms for loading or unloading the carriage. Specification 887,791 also is referred to.
Patent GB-1150339-A (GB)
Title: Improvements in or relating to Screw Pumps
Inventor: SCHLECHT KARL
IPC: F04C2/107
Filed: 1967-03-15
Abstract: 1,150,339. Rotary pumps. K. SCHLECHT. March 15, 1967 [ March 15, 1966], No.12264/67. Heading F1F. In a rotary pump of the internally-meshing screw type, a cylindrical stator 2 is made of an elastomeric material and defines a double helix that engages with a single-thread on a screw rotor, the stator being lodged within a tubular casing 1 having a plurality of axially-orientated slots 4 therein so that it can be squeezed radially inwardly, and thereby effect compression of the stator, by contracting an axially-split sleeve 5, which has a clamping bolt 9 thereon. Compression of the stator provides compensation for wear and/or reduces the output of the pump. The casing 1 may be replaced by a plurality of flexible steel bars (7, Figs. 3 and 4 not shown), which are axiallyorientated, embedded in the stator and have their ends attached to cylindrical members (6) engaging with the outer surface of the stator on either side of -the sleeve 5. The gap in the sleeve aforesaid may be closed by a strip 8 having the configuration of a segment of a hollow cylinder. It is indicated that contraction of the sleeve 5 may be effected by the pressure of a fluid exerted upon a flexible wall of a container surrounding the sleeve, this arrangement being provided as an alternative, or in addition, to the bolt 9.
Patent GB-459426-A (GB)
Title: Protecting device for water closets
IPC: A47K13/22
Filed: 1936-04-30
Abstract: 459,426. Closet seat guards. VOLKMANN, W., 21, Groperstrasse, Halberstadt, and KLEIST, W., 4, Bahnhofstrasse, Groningen, both in Germany. April 30, 1936, No. 12295. [Class 26] In a protecting- device for closets of the kind in which a paper web f having cut - out apertures corresponding to the hole in the seat k, is conducted from an unwinding roller a over a guide roll e at the front of the seat and back to the rear thereof, where it is wound on a roller b, the used portion of the web extending from the front of the seat towards the roller b, passes between the seat and an unused portion extending from the back to the front of the seat, the used portion having its unused side uppermost. The rollers are disposed in a box c secured to the wall at g, shaped to receive the fhish-pipe s, and provided with a cover d so disposed in grooves as to leave a slot e. The guide roller l is carried by a resilient member p, additional guides n, m, j, being provided. The roller a is operated by a crank.
Patent GB-880777-A (GB)
Title: Improvements in or relating to the production of superphosphates
Inventor: SYERS ROLAND
IPC: C05B1/02
Filed: 1957-04-16
Abstract: Superphosphates are prepared by intimately mixing ground phosphate rock with a sulphuric acid waste liquor, without the application of heat, in an amount insufficient to react completely with the rock, to form a semi-solid slurry, allowing the mixture to stand, breaking up and drying the caked product at at least 80 DEG C., preferably about 800 DEG C., mixing the dried product with a further quantity of sulphuric acid waste liquor in an amount sufficient to react with the remaining phosphate rock and to form a semi-solid slurry, without the application of heat, allowing the mixture to stand, and breaking up and drying the caked product, preferably at about 300 DEG C.  The sulphuric acid waste liquor may be the acid discharged from pickling steel articles or from the leaching of titanium ores.  Preferably the liquor is used in equal amounts in the two stages.
Patent GB-665174-A (GB)
Title: Improvements in or relating to methods of preparing phosphorous acid and salts thereof
IPC: C01B25/16
Filed: 1949-05-10
Abstract: Phosphorous acid is produced by reacting phosphorous trichloride with water or aqueous phosphorous acid at a temperature equivalent to, or above the boiling point of phosphorous trichloride but below that at which substantial decomposition of the trichloride into products other than the acid occurs.  A range of 72-200 DEG C. is specified. Various methods of operation are referred to involving passing the reactants countercurrently, but preferably liquid phosphorous trichloride is passed through <PICT:0665174/III/1> tube 3 into phosphoric acid contained in the bottom section 1 of a reactor heated by coils 6, 12.  The reactor is packed with rings 5, 11 of glass or porcelain.  At least 66 per cent of the trichloride is hydrolyzed in the bottom section, the vapours ascending the upper part against a descending stream of water introduced at 9.  Hydrogen chloride escapes at 10, and phosphorous acid at 4.  The temperature of the acid may be maintained at say 86-90 DEG C.  Hydrogen chloride is removed from the phosphorus acid by heating at 100-150 DEG C. at 30 mms. Hg, or by the passage of air or other inert gas at 150 DEG C. Mono- or disodium phosphite, or a compound Na, H2 PO3-H3 PO3, or the potassium salts are prepared by suitably neutralizing molten or solid phosphorus acid with sodium or potassium hydroxide.  The Specification as open to inspection under Sect. 91 refers also to the use of phosphorous tribromide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1072447-A (GB)
Title: Digital to analogue converter
IPC: H03M1/00
Filed: 1966-03-22
Abstract: 1,072,447. Electric selective signalling. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 22, 1966 [March 26, 1965], No. 12470/66. Heading G4H. Apparatus for producing a desired waveform comprises a store having a plurality of storage positions in each of which are stored digital signals representing the amplitude at one of a number of sample points along a varying analogue signal and means for reading out selected digital signals from the store and reproducing them as the corresponding analogue, signals, digital signals representing amplitudes of samples at adjacent points being stored at spaced storage locations. The variable analogue signal. Fig. 1 (not shown), may be a spoken word or syllable. It is sampled at 1500 points and the amplitudes are quantized in four steps. The store may be a magnetic drum or disc or a magnetostrictive delay line loop. The store is divided into 18 sectors, having 84 positions each, Fig. 2 (not shown). The digital bits representing the first sample are stored in position 1 of sector 1, the second sample in position 1 of sector 2 and so on, the eighteenth sample being stored in position 1 of sector 18. The nineteenth sample is stored at position 2 of sector 1 and so on. Timing means is provided to read out the samples in their proper order. The digital signals are each converted to an analogue equivalent and the resulting signal is smoothed to produce a signal approximating to the original waveform. This may be applied to a loud-speaker to speak the word or syllable. A number of stores may be provided, one being selected to speak the desired word or, when necessary, a number of stores may be selected in turn to build up a desired word from its component syllables. A group of storage positions are unused at the end of the 1500 filled by digital signals. This gives an interval during which the next store may be selected.
Patent GB-1535925-A (GB)
Title: Transistor drive circuit arrangements
IPC: H02M1/08
Filed: 1975-03-25
Abstract: 1535925 Transistor converters WESTING- HOUSE BRAKE & SIGNAL CO Ltd 17 Feb 1976 [25 March 1975] 12491/75 Heading H2F [Also in Division H3] A transistor drive circuit has a transductor 16, Fig. 2, with a control winding 18 connected to carry the collector current of the transistor and an output winding 30 coupled to control alternating current which is applied via a rectifier 36 to the transistor so as to drive the transistor in a sense to maintain or increase its conduction. The effect of the transductor control is that the drive to the transistor is only that which is instantaneously necessary to maintain the transistor saturated. A single phase circuit is disclosed (Fig. 1, not shown) having only one set of transductor output windings (22). The transductor 16 can be connected in the collector circuit of the transistor and the transistor can be used in inverters or chopper regulators. In the bi-phase circuit, Fig. 2, the transistor 10 is initially turned on by a control current applied to 40, 42 or through a control winding 44 which is preferably maintained during the required on period of the transistor. To turn off the transistor the control current is removed and a thyristor 46 is fired to shunt the base drive. As transductor 16 can produce an output, even when there is no current in winding 18 or 44, due to the magnetizing current of the saturable inductor a diode 50 and transistor 52 can be included to ensure turn off of the transistor 10. The transistor 10 can be turned off by interrupting the power supply by replacing the diodes 36 by thyristors (56, Fig. 3, not shown) or by supplying the input to the transformer 32 from a transistor inverter (64, Fig. 4, not shown) which can be stopped by a control circuit (68). A D.C. supply (66) for inverter (64) could be the main D.C. supply for an inverter employing the transistor 10.
Patent GB-511557-A (GB)
Title: Improvements in or relating to apparatus for use in mining
IPC: E21D9/04
Filed: 1938-04-26
Abstract: 511,557. Shields for miners. HANCOCK, E. J. L. April 26, 1938, No. 12503. [Class 85] A shield for miners has a surface sloping downwardly from the working face, reaction of falling roof material on said surface tending to move the shield towards the face. The shield may be built in situ of lumber, metal &c. and comprises an open girder frame 10 covered with sheet metal &c. to provide an upper supporting surface 14 contiguous with a more inclined driving surface 15 terminating in a vertical part 16, the whole being supported on rollers 17, or on wheels, selflaying tracks &c. For working in advance, the parts 15. 16 are provided with an aperture 19 so that'lining sections 20 may be erected within the shield to enclose a roadway leading to the shield. The surface 14 may be hinged for vertical adjustment, and the shield may have hand or power propelling means. A line of shields may be erected side by side and may support a floating track comprising rails 118 on wheel-supported sleepers 112, while the apertures 19 may be formed at the meeting edges of adjacent shields; trucks 18 run on the rails which terminate in a turntable 120 by which the trucks may be diverted to rails 218 leading through the roadway. Alternatively, floating conveyers may be provided and deliver to a conveyer passing through the roadway. With a high working face, elevated platforms 21, Fig. 4, are provided to support workers and may have chutes 22 for delivery of spoil..For working in retreat, roads 120, Fig. 4, are driven to the boundary and a lateral excavation is made in which a series of linked shields is erected; excavation is then effected back to the entry face 24.
Patent GB-567733-A (GB)
Title: Improvements relating to flexible remote control transmissions
IPC: F16C1/20
Filed: 1943-08-03
Abstract: 567,733. Bowden mechanism. AUTOMOTIVE REMOTE CONTROLS (STOKE - ON TRENT), Ltd., and CROME, C. H. Aug. 3, 1943, No. 12532. [Class 80 (iii)] In push-pull mechanism in which pull is transmitted by a cable and push by a helical coil surrounding the cable and enclosed in a guide tube, stretch of the cable and distortion of the coil are reduced by inserting a length or lengths of rigid rod or tube in the cable at any straight part of the transmission. The cable lengths a are secured to socket ends of rods b coupled by sleeve nuts c to the ends of a rod d. The helical coil e associated with the cable abuts a collar f threaded on each rod b and acting as a locknut. A length of helical coil g is preferably arranged around the rod d and between nuts h screwed on this rod. The whole is enclosed in a guide casing i. The cable a may have one or more tightly wound coils k surrounding and moving with it, as in Specification 548,934.
Patent GB-475397-A (GB)
Title: Improvements in or relating to radio and like transmitters
IPC: H03H2/00
Filed: 1937-05-03
Abstract: 475,397. Inductance coils. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 3, 1937, No. 12592. Convention date, May 2, 1936. [Class 38 (ii)] [Also in Group XL] An inductance coil comprises a helix L of ceramic material coated with metal and housed within a tube 3. The coil is rotatable about its axis and co-operates with a sliding contact fixed to the tube so as to put more or less of the helix in circuit.
Patent GB-217569-A (GB)
Title: Improvements in automatic guns
IPC: F41A5/32
Filed: 1924-05-22
Abstract: 217,569. Schneider et Cie. June 14, 1923, [Convention date]. Machine guns; ordnance breech mechanism.- A quick-firing automatic gun of the kind' which is fitted with a recoil-brake C, recuperator E, and ramming breech-block F has a control member I which is reciprocated longitudinally on the gun cradle A under the action of the moving barrel B and breech-block, and serves to actuate (1) a rocking ejector J, Fig. 14, for the empty cartridge case, (2) a locking carrier N for moving the cartridges L from a feed strip K, into line with the ramming breech-block, and (3) a bolt P which releases the recuperator O that moves the breech-block forward, rams the charge, and closes the breech. The gun shown is of the lcng recoil type in which the barrel B, breechblock carrier H, and control member I recoil together to the dotted line position shown in Fig. 1. During the return of the. barrel, the breech-block is arrested by the engagement of the bolt P in a recess a<1> so that the cartridge case is extracted and the breech opened against the action of the recuperator O. The returning barrel engages a projection i<1> on the control member I to slide, it forward and permit a camgroove, I<4> thereon to actuate the cartridge-case ejector J, a second cam-groove I<5> serving to actuate the cartridge carrier N. Continued movement of the control member I causes a projection I<6> to depress the bolt P to release the breech-block, the movement of which, after the barrel comes to rest, returns the control member to its forward position. The ejector arms J and the cartridge carrier arms N are, as shown in Fig. 14, independently mounted on a longitudinal shaft j and are actuated in proper sequence by the cam grooves I<4>, I<5>. The arms J are rocked by a pin J<1> engaging the groove I<4> and the arms N are rocked by a pin N<1> engaging the groove I<5>. Both pins slide freely in the straight groove I', I<2>, I<3> during rearward movement of the control member and are deflected into the grooves I<4>, P on the return. The cartridges are carried in a feed strip K, Fig. 9, fed into the .gun by star wheels M engaging holes in the strip. The wheels M are mounted on a shaft m and are rotated by a shaped member J<3> moving with the arms J and engaging spring pins M', M<2> on a disc M<3> keyed to the shaft m. The breech-screw is rotated for locking and unlocking by a quick-pitched screw F<1> engaging a nut on the breech-screw cairrier H, the final forward movement of which relatively to the breech block actuates the firing pin. When firing single shots, a lever R, Fig. 9, is turned to engage and stop the control member short of the firing position. For hand-loading, the control member is moved by a pinion gear S.
Patent GB-851027-A (GB)
Title: Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium
Inventor: JR NELSON JAMES NEWHARD
IPC: C23C22/38
Filed: 1959-04-14
Abstract: The baths of the parent Specification are modified so as to contain 1.9-2.1 mols of potassium per mol of sodium.  Baths which p  do not initially contain these relative proportions of potassium and sodium may be replenished so as to adjust the proportions to within the specified range.  Specification 832,486 also is referred to.
Patent GB-875868-A (GB)
Title: Improvements relating to pressure vessels
Inventor: HAWKINS RONALD JAMES
IPC: G21C13/00
Filed: 1959-04-16
Abstract: 875,868. Reactors. BABCOCK & WlLCOX Ltd. April 11, 1960 [April 16, 1959], No. 12923/59. Class 39(4). The spherical pressure vessel of a gas cooled, graphite - moderated, heterogeneous nuclear reactor has a layer of thermal insulation applied to the lower half of the external surface. The insulation is maintained against the vessel by flexible sheet metal panels secured resiliently together to permit relative dimension changes between the vessel and panels. As shown, the lower half of the vessel 1 is covered by the insulation 6 beneath the aluminium panels 20. The insulation 6 consists of layers 12, 13 of 85% magnesia in the form of slabs, held in place by the studs 11 and 10 welded to 1. A metal mesh 16, with a thin layer of cement, lies between 6 and the panels 20, and is divided into panels 18. The panels 20 overlap each other and are secured together at holes 25 to permit relative lateral movement; they are also secured to 1 by the lugs 23, 24 which are bolted to the links 17 shackled to the plates 9 welded to 1. Conduction of heat from 1 along 9 and 17 is small due to the small cross-section. The panels 20 accommodate horizontal dimension changes of vessel 1 by flexing of 23, 24 and vertical changes by movement of bolts 50 along slots 29.
Patent GB-238943-A (GB)
Title: Improvements in and relating to indicating and advertising devices
IPC: G09F11/06
Filed: 1924-05-27
Abstract: 238,943. Wilkinson, A., Brown, J., and Multiple Advertising Clock Co., Ltd. May 27, 1924, Hinged elements, rotary apparatus with; moving apparatus combined with clocks.-A hinged leaf advertising or displaying device comprises in combination a vertical shaft 3 carrying a pair of spaced discs 5 between which the display leaves 10 are pivoted by stubs 11, 12 adjacent their inner vertical edges, a spring 14 being provided for each leaf 10 to turn it through substantially 180‹ when released from a roller stop 18, of which a train is provided to keep apart the first few of the on-coming leaves. The exhibited leaves form a flat uninterrupted surface and may bear a composite design. The rollers 18 may be arranged in straight or curved formation, and may have their axes staggered. The lower stubs 12 bear on a surface 13, and the upper stubs 11 carrying the springs 14 are alternately long and short to enable the spring-retaining screws 20 to clear. The device mav be combined with a clock, and may be operated by the clock or other mechanism or by hand. The discs 5 may be mounted on sleeves frictionally held on the shaft 3 for dismantling, or the, leaves 10 may fit detachably in grooves in pivot pins replacing the stubs 11, 12. The stubs or pins engage holes or slots in the discs 5. The leaves 10 mav be in sections each controlled by a spring 14 and retained bv a stop 18. Concealed lamps illuminate the leaves.
Patent GB-816660-A (GB)
Title: Improvements in or relating to transistor-modulators
IPC: H03C1/36
Filed: 1956-04-27
Abstract: 816,660. Transistor amplitude modulating circuits and phase or frequency detectors. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 27, 1956 [May 2, 1955], No. 13004/56. Class 40 (5). In a transistor modulator or phase or frequency detector one signal 4 is applied in push-pull to the collectors of transistors 1, 2, and another signal 3 in opposite phases between the emitter and base of the transistors, so that rectifying i.e. forwardly conducting current flow between the base and collector of each transistor, 2 or 1 is limited by the emitter-collector current of the other, 1 or 2 respectively. Also no output current passes through the source 3 if the transistors are unsymmetrical. If 3 is a small modulation signal and 4 a larger amplitude carrier source, the modulated carrier is also non-iinearly amplified relative to the modulation but may be linearised by resistors in series with the emitters or between the collectors and bases as shown. If 4 is the modulation, 3 a larger amplitude carrier source, an unamplined linearly modulated carrier is produced without resistors. If opposite sides of source 4 and load 5 are connected to the collectors of a similar pair of transistors with emitters fed in opposite phases by the source 3, the low frequency 3 may be eliminated from the double push-pull balanced output. Reference has been directed by the Comptroller to Specification 773,435.
Patent GB-397078-A (GB)
Title: Improvements in or relating to mechanical warp thread stop motions for looms
IPC: D03D51/20
Filed: 1933-05-04
Abstract: 397,078. Loom warp stop-motions. SCHEFFEL, R., Greiz, Thuringia, Germany. May 4, 1933, No. 13029. [Class 142 (i).] The serrated bar 5, which is movable in the upper U-shaped heald stave 3 and stops the loom when its movement is blocked owing to warp breakage and consequent falling of a heald, is operated directly by a normally stationary vertical stop surface 7 on a bearing 8 on a lever 15 which is pivoted on a slider 10 and is normally raised by a spring 14. A cam slot on a part 17 connected to the lay engages a pin 21 on the slider thereby moving this to the right when the lay beats up, so that at the time when the heald frame is lowered and the tensioned warp threads raise the healds therein the surface 7 is moved to the right and normally moves the bar 5 to the right. If this movement is prevented, the lever 15 is rocked actuating a Bowden wire 24, which raises a lever 29 pivoted at 25 to the starting handle, the lever 29, which is retained by a pawl 28, being thereupon engaged by a part on the lay and actuated to stop the loom. Healds. These are guided by a pin fixed to a part on the loom frame.
Patent GB-700071-A (GB)
Title: Improvements in or relating to air pilot's controls
IPC: B64C13/04
Filed: 1952-05-22
Abstract: 700,071. Retractive switches. BLACKBURN & GENERAL AIRCRAFT, Ltd., and WOODWARD, S. C. May 22, 1952. No. 13033/52. Class 38(5) [Also in Group XXXIII] In a control column head is mounted a rotatable member 8 so that its fluted surface protrudes from the arm 3. Member 10 is eccentrically pivoted to member 8, so that rotation of the latter in opposite directions results in movement of member 10 in the direction of its length, in opposite directions, causing actuation of one of the switches 6 and 7, according to the direction of movement. A double acting spring box is connected between member 10 and the arm 3 to provide centering bias, rendering both switches off unless member 8 is held in a rotated position.